California

Patent attorneys in California

California hosts 9,553 active patent practitioners registered with the USPTO Office of Enrollment and Discipline. Patent attorneys and patent agents can both prepare and file patent applications, but only patent attorneys can also offer legal advice on prosecution strategy, freedom-to-operate analyses, and infringement opinions in California. Practitioners are concentrated across 20 cities, with the largest clusters in the metros listed below. Notable firms with multiple registered practitioners in the state include Adobe Systems, Inc., Morrison & Foerster, LLP, and Pfizer Inc..

Top cities in California

All practitioners in California

Photon Rao

Reg. 57128

Patent agent

Foster City, CA · 94404

650-525-9038

Pradhan S Rao

Reg. 43875

Patent attorney

Adobe Systems, Inc.

San Jose, CA · 95110

408-536-3298

Sasha G Rao

Reg. 57017

Patent attorney

San Francisco, CA · 94111

415-646-4702

Swathi K Rao

Reg. 57442

Patent agent

Morrison & Foerster, LLP

San Francisco, CA · 94105

415-268-6334

Zhigang Rao

Reg. 63878

Patent attorney

Pfizer Inc.

San Diego, CA · 92121

317-498-4643

Robert D Rapp

Reg. 79177

Patent agent

Harbor Freight Tools USA, Inc.

Calabasas, CA · 91302

747-774-0716

Irving Shale Rappaport

Reg. 22472

Patent attorney

Palo Alto, CA · 94303

650-321-7024

Joel Cruz Rarang

Reg. 58489

Patent agent

Grand Hills, CA · 91344

310-435-8176

Nabeela Rasheed

Reg. 43363

Patent attorney

Amunix Pharmaceuticals Inc

South San Francisco, CA · 94080-1826

312-363-7365

Hasan M. Rashid

Reg. 62390

Patent attorney

Dolby Laboratories

San Francisco, CA · 94103

617-416-6990

Nancy E Rashid

Reg. 58946

Patent agent

University of California, Davis

Davis, CA · 95618

530-757-3429

Oleg Borisovich Rashkovskiy

Reg. 52154

Patent agent

Cupertino, CA · 95014

408-593-1459

Colin D Rasmussen

Reg. 60450

Patent attorney

Ascus IP Law, PC

Colton, CA · 92324

909-653-6607

Michael O Rasmussen

Reg. 52155

Patent agent

San Marino, CA · 91008

626-278-3642

Jacobus C Rasser

Reg. 37043

Patent attorney

San Diego, CA · 92101

619-963-1120

Rodger Hugo Rast

Reg. 45853

Patent agent

O'Banion and Ritchey LLP

Sacramento, CA · 95814

916-498-1010

Saloni Rastogi

Reg. 71840

Patent agent

San Diego, CA · 92129

858-373-8944

Reginald Andre Ratliff

Reg. 48098

Patent attorney

Vanguard/IP LLP

Fremont, CA · 94539

510-461-1137

Lavanya G Rau

Reg. 65504

Patent agent

Knobbe Martens Olson & Bear LLP

Irvine, CA · 92614

949-721-2907

Amir H Raubvogel

Reg. 37070

Patent attorney

Raubvogel Law Office

Redwood City, CA · 94062

650-209-4884

Christopher W Rauen

Reg. 57259

Patent attorney

San Francisco, CA · 94131

415-513-2466

Richard W Rauseo

Reg. 35654

Patent attorney

San Dimas, CA · 91773

626-859-2400

Vishal Ravi

Reg. 81177

Patent agent

Perkins Coie LLP

Palo Alto, CA · 94304-1212

332-238-2776

Deepa Ravindranath

Reg. 60379

Patent agent

Carr & Ferrell LLP Attorneys At Law

Palo Alto, CA · 94303

650-812-3400

Manita Rawat

Reg. 61944

Patent attorney

Morgan, Lewis & Bockius LLP

Palo Alto, CA · 94304-1124

650-843-7267

Pattric J Rawlins

Reg. 47887

Patent attorney

Procopio Cory Hargreaves and Savitch LLP

San Diego, CA · 92101

619-238-1900

Timothy J. Rawson

Reg. 70316

Patent attorney

Pillsbury Winthrop Shaw Pittman LLP

Los Angeles, CA · 90017-5406

213-488-7212

Christopher M. Ray

Reg. 72180

Patent attorney

Thousand Oaks, CA · 91362

805-492-8821

Patricia L Ray

Reg. 33546

Patent attorney

Torrence, CA · 90501

215-908-6810

Christina V Rayburn

Reg. 78166

Patent attorney

Hueston Hennigan LLP

Newport Beach, CA · 92660

650-303-0528

Common questions

Do I need a patent attorney based in California?

No. Every USPTO-registered patent practitioner is licensed to file applications on behalf of inventors in any state, regardless of where the practitioner's office is. Choosing a California-based practitioner can simplify in-person inventor signings, local meetings, and same-time-zone calls, but it is not a legal requirement.

How many patent attorneys are licensed in California?

9,553 active USPTO-registered patent practitioners list a California office address on the OEDCI roster. This includes both patent attorneys (who can also offer legal advice) and patent agents (who can prepare and file patents but not offer broader legal advice).

What is the difference between a patent attorney and a patent agent?

Both pass the USPTO Patent Bar and can prepare, file, and prosecute patent applications. Only patent attorneys also hold a state bar license, meaning they can additionally offer legal advice on infringement, licensing, and litigation strategy. Patent agents tend to charge less per hour and are common at large in-house IP departments.